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日期:2024-07-06
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation".[1][2] A...
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日期:2024-07-05
Learn more from WebMD about the use of lasers in your dentist's office, including pros and cons. ... Lasers have been used in dentistry since 1994 to treat a number of dental problems. Yet, despite FDA approval, no laser system has received the American D...
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日期:2024-07-06
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" ......
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日期:2024-07-08
Lawrence Livermore National Laboratory 7000 East Avenue • Livermore, CA 94550 Operated by Lawrence ......
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日期:2024-07-10
Laser beam welding (LBW) is a welding technique used to join multiple ... used are solid-state lasers (especially ruby lasers and Nd:YAG lasers) and gas lasers....
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日期:2024-07-07
Dr Evil's sharks with frikin lasers attached to their heads ... This feature is not available right now. Please try again later....
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日期:2024-07-10
Lasers is the third studio album by American rapper Lupe Fiasco, released on March 7, 2011 by Atlantic Records. Production for the album took place between 2008 and 2010. Lasers features production by The Audibles, The Neptunes, Needlz, Alex da Kid, Syien...